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1 mol of anything = 6.022x1023 atoms
so 1.4 mole = 1.4 * 6.022x1023 atoms / mole = 8.4308x1023 atoms
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How many nitrogen atoms would be present in 7 moles of NH42C2O4?
Your compound's chemical formula is (NH4)2Cr2O7 - so you can see that it contains 2 moles of NH4+ per mole of the salt. So in 7 moles you have 14 moles of ammonium, containing 14 moles of N atoms which means that you have (1 mole = 6,022*10^23 atoms) 14 mols * 6,022*10^23 atoms/mole = 8,43*10^23 atoms
What is the mass of nitrogen in grams?
One mole of atoms of an element is equal to the atomic mass of that element expressed in grams. Nitrogen-14 so one mole of nitrogen weighs 14 g
How many atoms are present in helium lithium beryllium boron carbon nitrogen and oxygen?
1 mole of the element has 6.023 x 1023 atoms 1 mole = 4 g of helium = 7 g of lithium = 9 g of beryllium = 11 g of boron = 12 g of carbon = 14 g of nitrogen = 16 g of oxygen
How many valance electrons are in trivalent atoms?
14
How many protons are in 14 atoms of carbon?
6.
How many nitrogen atoms would be present in 7 moles of NH42C2O4?
Your compound's chemical formula is (NH4)2Cr2O7 - so you can see that it contains 2 moles of NH4+ per mole of the salt. So in 7 moles you have 14 moles of ammonium, containing 14 moles of N atoms which means that you have (1 mole = 6,022*10^23 atoms) 14 mols * 6,022*10^23 atoms/mole = 8,43*10^23 atoms
What is the mass of nitrogen in grams?
One mole of atoms of an element is equal to the atomic mass of that element expressed in grams. Nitrogen-14 so one mole of nitrogen weighs 14 g
How many grams of sodium contain the same numberof atom as 15grams of magnesium?
Let us find Magnesium atoms first. 15 grams magnesium (1 mole Mg/24.31 grams)(6.022 X 10^23/1 mole Mg) = 3.72 X 10^23 atoms magnesium Now take this an drive to grams sodium 3.72 X 10^23 atoms (1 mole Na/6.022 X 10^23)(22.99 grams/1 mole Na) = 14 grams of sodium ----------------------------
What has a mass of 14 g?
1 mole of carbon-14 atoms. (probably what your instructor is looking for) More specifically, One mole of the isobar (elements with the same number of nucleons) with 14 nucleons: Be-14, B-14, C-14, N-14, O-14, F-14 are all suitable elements of which 1 mole of any of them (or a combination of all of them) will equal 14 grams. Also, any 1 mole of a molecule with a molecular weight of 14 will weigh 14 grams. An example: Methane: CH4 IFF the carbon atom is a C-10 and the hydrogens are H-1. Or half a mole of Silicon-28, and so on... Mess with your professor a bit. It's good for them. haha!
How many atoms are in 3CH4?
The Chemical equation tells you 3CH4 the first 3 tell you that there are 3 molecules of CH4 CH4 has 1 Carbon and 4 hydrogen (it is called methane) making a total of 5 atoms and there are 3 of them so there is a total of 15 atoms. EDIT (by Dr.J.): Not correct. If there are 3 moles as stated, each mole contains 6.02x10^23 molecules and each MOLECULE contains 5 atoms, so the CORRECT answer is (15)(6.02x10^23) = 9x10^24 atoms
How many atoms are present in helium lithium beryllium boron carbon nitrogen and oxygen?
1 mole of the element has 6.023 x 1023 atoms 1 mole = 4 g of helium = 7 g of lithium = 9 g of beryllium = 11 g of boron = 12 g of carbon = 14 g of nitrogen = 16 g of oxygen
How many atoms are in C2H8O4?
14
How many atoms are there in H2SO4?
14
How many hydrogen atoms does cyclohexane have?
Since the chemical formula for Cycohexane is C6H12, it has 12 atoms of Hydrogen.
How many half-lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14?
9 half lives have elapsed to yield a sample with 125 atoms of C-14 and 375 atoms of N-14.
How many moles of nitrogen gas are there in 35.7 gm of nitrogen gas?
molar weight of N = 14 grams/mole 35.7 grams/14 grams/mole = 2.55 moles
How many moles of hydrogen atoms in C2H6?
You will need to specify the mass of C6H6 in order to calculate a number of moles. If you know the mass, the general formula is:n=m/M, where n is the number of moles, m the mass of C6H6 and M the molar mass (78.11g/moles)
